13 Pressure Pressure is calculated by using the equation below. pressure = ForceareaPressure unit is pascal (Pa). It is equal to 1N/m2
14 Pascal’s PrincipleWhen you blow a bubble, you blow air in one direction. So why does the bubble get rounder as you blow, instead on longer?Fluid property: Fluids exert pressure evenly in all directions.
15 Pascal’s Principle P1 = P2 So our equation can now look like this: F1 = F2A1 A2